The Collaborative International Dictionary of English v.0.48:

Sturgeon \Stur"geon\, n. [F. esturgeon, LL. sturio, sturgio,
   OHG. sturjo, G. st["o]r; akin to AS. styria, styriga.]
   (Zool.)
   Any one of numerous species of large cartilaginous ganoid
   fishes belonging to Acipenser and allied genera of the
   family Acipenseridae. They run up rivers to spawn, and are
   common on the coasts and in the large rivers and lakes of
   North America, Europe, and Asia. Caviar is prepared from the
   roe, and isinglass from the air bladder.
   [1913 Webster]

   Note: The common North American species are Acipenser
         sturio of the Atlantic coast region, Acipenser
         transmontanus of the Pacific coast, and Acipenser
         rubicundus of the Mississippi River and its
         tributaries. In Europe, the common species is
         Acipenser sturio, and other well-known species are
         the sterlet and the huso. The sturgeons are included in
         the order Chondrostei. Their body is partially
         covered by five rows of large, carinated, bony plates,
         of which one row runs along the back. The tail is
         heterocercal. The toothless and protrusile mouth is
         beneath the head, and has four barbels in front.
         [1913 Webster]

   Shovel-nosed sturgeon. (Zool.) See Shovelnose
   (d) .
       [1913 Webster]

WordNet (r) 3.0 (2006):

sturgeon
    n 1: large primitive fishes valued for their flesh and roe;
         widely distributed in the North Temperate Zone

U.S. Gazetteer Places (2000):

Sturgeon, MO -- U.S. city in Missouri
   Population (2000):    944
   Housing Units (2000): 407
   Land area (2000):     0.631496 sq. miles (1.635567 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.631496 sq. miles (1.635567 sq. km)
   FIPS code:            71224
   Located within:       Missouri (MO), FIPS 29
   Location:             39.233166 N, 92.280300 W
   ZIP Codes (1990):     65284
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Sturgeon, MO
    Sturgeon


U.S. Gazetteer Places (2000):

Sturgeon-Noblestown, PA -- U.S. Census Designated Place in Pennsylvania
   Population (2000):    1764
   Housing Units (2000): 715
   Land area (2000):     2.866061 sq. miles (7.423064 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    2.866061 sq. miles (7.423064 sq. km)
   FIPS code:            74948
   Located within:       Pennsylvania (PA), FIPS 42
   Location:             40.383875 N, 80.209191 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Sturgeon-Noblestown, PA
    Sturgeon-Noblestown
    Sturgeon, PA
    Sturgeon